If you have COVID-19, the most important first steps are to stay home until your symptoms improve, manage your fever and discomfort with over-the-counter medications, and determine whether you qualify for antiviral treatment. Most people recover at home without medical intervention, but acting quickly in the first few days can shorten your illness and protect the people around you.
Stay Home Based on Your Symptoms, Not a Calendar
Current guidance has moved away from a fixed five-day isolation period. Instead, you can leave isolation once you’ve been fever-free for at least 24 hours without using fever-reducing medication and your other symptoms are mild and improving. For some people that takes three days; for others it takes a week or more.
Even after you feel better, wear a well-fitting mask around others indoors for five full days from when your symptoms started (or from your positive test date if you never had symptoms). Avoid close contact with anyone at higher risk for severe illness, including elderly family members, immunocompromised individuals, and residents of group care facilities, for 10 days.
Decide Whether You Need Antiviral Treatment
Antiviral medication can reduce the severity and duration of COVID, but it only works if you start it within the first five days of symptoms. You’re eligible if you’re 18 or older (or over 12 and weighing at least 88 pounds), have mild to moderate symptoms that don’t require hospitalization, and have at least one risk factor for severe disease. Contact your doctor or use a telehealth service as soon as you test positive so you don’t miss the treatment window.
The list of conditions that put you at higher risk is broader than many people realize. It includes diabetes (type 1, type 2, or gestational), obesity, asthma, COPD, heart conditions like heart failure or coronary artery disease, chronic kidney or liver disease, cancer, HIV, Down syndrome, current or former smoking, pregnancy or recent pregnancy, and the use of immunosuppressive medications. Depression and other mood disorders, schizophrenia spectrum disorders, dementia, and Parkinson’s disease also qualify. Even physical inactivity is on the CDC’s list. If any of these apply to you, getting evaluated early is worth the effort.
Manage Your Symptoms at Home
Acetaminophen or ibuprofen will help with fever, body aches, and headache. Follow the dosing instructions on the package and don’t combine products that contain the same active ingredient.
Hydration matters more than you might think. Fever and faster breathing both pull water from your body, and adequate fluid intake loosens mucus in your nose and throat, making congestion easier to clear. Water is fine, but broth and drinks with electrolytes can help if you’re sweating heavily or not eating much. Sip steadily throughout the day rather than forcing large amounts at once.
Rest is genuinely therapeutic here, not just comfort. Your immune system burns through energy fighting the virus, and pushing through normal activities slows that process. Sleep as much as your body wants, especially in the first few days.
Protect the People You Live With
If you share a home with others, isolate in a separate room with the door closed and use a separate bathroom if possible. Wear a mask any time you need to be in shared spaces.
Ventilation is one of the most effective tools for reducing household spread. Open windows when weather permits. If you have a portable air cleaner with a HEPA filter, place it in the room where you’re isolating rather than a common area. Choose a unit sized for that room and run it on the highest speed you can tolerate. If you don’t have a HEPA unit, you can build a simple DIY air cleaner by taping a high-efficiency furnace filter (rated MERV 13 or higher) to a box fan. Use a fan manufactured after 2012 that carries a UL or ETL safety certification, and run it whenever the room is occupied.
For your home’s central HVAC system, upgrade to the highest-efficiency filter compatible with your unit. Air cleaning helps, but it works best alongside masking and physical separation, not as a replacement.
Know the Emergency Warning Signs
A small percentage of people worsen significantly, usually around days five through ten. If you have a pulse oximeter, check your oxygen level a few times a day. A reading below 95% warrants a call to your doctor. Seek emergency care immediately if you experience difficulty breathing, persistent chest pain or pressure, confusion, an inability to stay awake, or bluish lips or face.
Trust your body even if your numbers look normal. If you feel short of breath, are breathing faster than usual, or feel too sick to handle basic daily activities, call a healthcare provider regardless of what a pulse oximeter shows.
Confirm You’re No Longer Infectious
Rapid antigen tests can help you gauge when it’s safe to be around others again. The FDA recommends two negative antigen tests taken 48 hours apart if you’ve had symptoms. If you tested positive but never developed symptoms, three negative tests spaced 48 hours apart provides more reliable confirmation. A single negative test can be misleading, especially early in recovery.
Ease Back Into Exercise Gradually
One of the most common mistakes after COVID is returning to workouts too quickly. The current consensus is to wait at least seven days after your last symptom before any exercise at all. Once that window passes, start with two weeks of very light activity: gentle walking, flexibility work, and breathing exercises. A good benchmark for readiness is being able to walk about a third of a mile on flat ground without unusual fatigue or breathlessness.
Increase duration by 10 to 15 minutes per day only if you tolerate the current level. Watch for warning signs that you’ve done too much: feeling unrested an hour after exercise, abnormal breathlessness, a heart rate that seems too high for the effort, excessive fatigue the following day, or worsening mood. If any of these appear, step back to lighter activity for several more days before trying again.
Reducing Your Risk of Long COVID
Long COVID, where symptoms like fatigue, brain fog, or shortness of breath persist for months, remains a concern even after mild infections. One finding worth noting: a large randomized trial published in The Lancet Infectious Diseases found that metformin, a common and inexpensive diabetes medication, reduced the incidence of long COVID when started early in infection. The study enrolled adults aged 30 to 85 who were overweight or obese and began treatment within the first week of symptoms. Metformin isn’t currently a standard COVID treatment, but if you fall into a higher-risk category, it may be worth discussing with your doctor alongside antiviral options. Ivermectin showed no clinical benefit in the same trial or in multiple other large studies.
Beyond medication, the basics matter: adequate rest during the acute phase, gradual return to activity, and not ignoring lingering symptoms. If fatigue, cognitive difficulties, or exercise intolerance persist beyond four weeks, that pattern is worth medical attention rather than waiting it out.